Nozspickr Reinvent the wheel, you are just using an approximation of tonnage using drilled meters. Big deal. estimate volume and use specific gravity instead or is that too simple for you. Nor does it tell you how many ozs are in that tonnage and you cant come to an accurate estimate either using contained gold in the drill core.
Take company A who genuinely wants to determine the body size by drilling perpendicularly to the vein as much as possible and the same body drilled by Company B at oblique angles as just one example. Same body, but guess which company has the better drill core with more contained gold.
Your assumptions are ridiculous.
You will need a shiny new toy well before 45 days with that open House thingy. Youre dropping again.